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3 Sheets-Sheet 1 Ilz venan 6777207266801/ MMM da Jwvze .5t

(No vModel.) E. MOREAU.

- HAND Rook DRILL. No. 268,427. Patented Dee. 5, 1882.

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3 Sheets-Sheet 2.

Patentedv Deo. 5, 1882.

E. MOREAU.

HAND ROCK DRILL.

(No Model.)

S-Sheets-Sheet 3.

v(No Model.)

MOREAU HAND ROCK DRILL.

No. 268,427. -Patented Dec. 5, 1882.

.` UNITED STATES -PATENT OFFICE.

EUGENE MOREAU, OF sAN FEANoIsoO, CALIFORNIA, AssieNOn 'ro THEO- DOEE w. STERLING, OF NEW YORK, N. r.

HAND ROCK-DRILL.

l SPECIFICATION forming part of Letters Patent No. 268,42*?, dated December 5, 1882.

' Application filed Marcl114, 1882. (No model.)

To all whom it may` concern;

Be it known that I, EUGENE MOREAU, of the city of San Francisco, in theState of California, have invented a certain new and useful Improvement in Hand` Rock Drills, of which the following is a full, clear, and exact description.

, This invention more particularly relates to hand rockdrills in which are combined a se- 1 o ries'of hammers arranged to revolve in concert about a common center, and each of which is successively brought in line with the drillor the drill-holding spindle by the mechanism which revolves the series of hammers, and which,

acting in concert with other devices, causes each hammer to deliver its blow upon the drill or drill-holding spindle that is made to continuously revolve, vsubstantially as described in an applicationfor patent made by me and filed zo in the United States Patent Office ou the 28th day of January, 1882.

The invention consists-in a novel method of automatically feeding the drill, and means therefor, whereby thedrill is made to advance 2 5 toward the roel; as fast as required by the progress of the boring.

It also consists in a certain combination of swivels and slides with the stand which carries the machine, whereby the machine may 3o be easily and quickly placed in any desired position; also embraces other details of lconstruction, whereby increased facility is afforded for operating the drill, substantially as hereinafter described. Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure lis a longitudinal vertical section of 4o a hand rock-drill having my invention applied.

Fig. 2 is a partially-sectional longitudinal elevation of the front part of said machine, showing the hammers and a stationary cam used in their operation. Fig. 8 is a longitudinal vertical section of the front part of the machine, in

illustration of the action of the automatic feeding mechanism. Fig. 4 is a top view ofthe machine, with the cover removed, for the purpose showing the gears, hammers, and other parts 5o inclosed by the tubular frame of the machine.

Fig.5 is a rear elevation ofthe machine. Fig.

6 is a vertical cross-section of the same on the line a' x in Fig. 4, looking from the rear of the machine; and Fig. 7 a vertical cross-section on the line yy iu Fig. 4, looking from the front of the machine.

Ain the drawings indicates a tubular box made to open on its top side nearly throughout its length, as shown in Figs. 4 and 6, and closed by a cover, B, hinged ou its one side, as at b, and engaging with a latch, c, on its opposite side. This cover protects the internal part of the machine from dust and ying A fragments of rocks or injury from other causes.

At the front end of the machine is secured, by means of bolts, a ange, on which. is cast the cam C that lifts the hammers and that has a central hub, d, bored to receive the journal of the central shaft, D. Therear endof this shaft D rests in a step-bearing, e, cast with the box A, and near said bearin g is a bevel-wheel, E, fast on the shaft D.

G Gr indicate the hammcrs,arranged at equal distances from each other around and parallel with the shaft D, and at uniform distances 75 from theI axis of said shaft. These hammers are carried by and free to slide within or through disks or dan ges H I, fast on the shaft D, whereby on the rotation of the shaft D the series of hammers rotate with it about a common center and are guided in their longitudinal movements. Springs Jserve to press the hammersforward. Each hammerisrestrained from rotating about its own axis by means ot' a roller, f, on it arranged to travel within a slot in thefiange H, and each hammer Gr has another roller, g, on it, which bears, by the pressure of the spring J, against the stationary cam (l, which is of suitable construction on its face to cause each hammer in succession, as the series of hammers are revolved in concert with the shaft D, to be suddenly and forcibly thrown forward by its spring J, and deliver its blow on the rear end of the drill-spindle K, which carries on its forward end, by means of a connecting-clamp, the drill h, and which has aleather or other soft or elastic washer,i, interposed between a flange, k, on said spindle and the forward end of the main frame or box secured thereto. The drill is rotated while the blow is Ico being imparted to it,and is kept constantly rotating by means of a pinion, l, on the central rotating shaft,'D, arranged to gear with'a wheel, m, on the drill-spindle.

Near the rear end of the box A,andv cast at right angles with it, is a sleeve, L, that receives within 'it a shaft, M, to which is secured a bevel-wheel, F, that -gears withv the bevelwheel E on the shaft D. The inner end of the shaft M rests in astep-bearing, n, cast with the box A. -A fly-wheel, N, having a crankhandle, o, is keyed on the outer end of the shaft M.

On what may be termed the under part of the box A, extending throughout its length, 'is cast a V-shaped slide, P, which is planed to t correspondingly-shaped grooves or recesses in a right-angularly shaped support, Q, to provide forthe passage of the slide P through said support.

Under or along one side ofthe box A, and parallel with the shaft D, is a screw, R, arranged to rotate in bearings provided for it iu the ends of said box, but restrained by suitable 'collars on it from longitudinal movement. This screw R works through a nut, r, on the supports Q.

O-n the outer end of the screw R is-keyed a handle or hand-wheel, S, for operating it, and 0n the opposite or inner end ot' said screw is fitted aloose pinion, t, and a sliding clutch or sleeve, u, which is constructed to engage with and disengage from said -pinion according to the direction in which the sleeve is slid upon the smooth inner end portion of the screw R. The sleeve 'u is iitted to turn with the screw R,

' as well as to slide independently along it, by

means of an internally-projecting pin on the sleeve, arranged to pass through a longitudinal slot in the screw, as shown in Figs. l and 3,

or said sleeve may be otherwise equivalently.

tted. When the sleeve u is pushed against the pinion t said pinion cannot turn without imparting the same motion to the sleeve; but when said sleeve is drawn away from said pinion the motion oi' both are independent. The

' sleeve u has a circular groove in or around it for the purpose of receiving the end of a lever,

o, pivoted intermediately of its length at w.

Secured on the drill-spindle end of the box A or flange thereon is a casting or box, S,

bored to receive the drill-spindle K, which has v a groove cut around an enlarged portion of it to receive within it the opposite end of the lever n to that which engages with the sleeve u.

' Fastened to the box S is a spring, a', which,

pinion l on the shaft D with the pinion ton the screw R.

The boxS is constructed to cover all the front gearing, thus protecting it from injury.

The slide seat or support Q is secured by a swivel-bolt, d', to a Split sleeve, A', which is titted to slide up and down or along a column, B', and is made capable of turning thereon to adapt the drill to different positions of working, and when the machine has been thus adjusted, as required, it is held in position by a screw-bolt, o', applied to the split portion of the sleeve. Y

In operating the drill, rotary motion vis imparted to the iiy-wheel N, and is transmitted through the bevel-gears E Fto the shaft D, whereby, and through the agencyoi the anges H I, springs J, and stationary-cam O, the hammers, rotating in common with the shaft D, but not on theirown axes, are made to successively deliver their blows on the head of the revolving drill-spindle K. Each blow is immediately transmitted to the drill-point or drill proper, h. To preventthe friction which would be caused by Contact of each hammer with the head of the spindle, after the delivery of the blow and before the hammer is pushed back again by its travel over the face of the stationary cam G,

the spring J of each hammer is made of such length as that it is fully expanded before the contact of the hammer with the spindle takes place. At the moment of contact the hammer rebounds, as the'spring is too short to press it against the spindle, and thus the friction referred to is avoided.

The machine can be made to go forward or backward on its support by suitably turning the hand-wheel S, and with it the screw R, working through the nut r on the support Q, which has a xed relation. If, however, the operator is so engaged by workin g at the crank O of the tly-wheelN as to be unable to use the hand-wheel S, it is then desirable to so connect the feed-screw R with other parts as to cause the machine to'move forward automatically. To accomplish this the clutch or sleeve u on the end of the screw It is connected by the lever n with the grooved head of the spindle K, which has a longitudinal movement in its bearing of aboutthree-eighths of an inch, more or less, Fig. l showing it in its extreme forward position, and Fig. 3 exhibiting it in its extreme backward position.

Supposing the parts to be placed as indicated in Fig. 1, and that the point of the drill does not bear against the rock, the blows of the hammers on the drill-spindle will be received by the leather-washer z', and in thisposition of the spindle the sleeve u is pushed into clutch-connection with the pinion t. Now, as the pinion t is driven by the wheel b', which IOO IIO

derives its motion from the pinion Z on the shaft D, the rotary motion communicated to said pinion t is transmitted through the sleeve u to the screw It, thus drawing the machine forward. This forward movement of the machine will continue until the drill-point comes in contact with the rock, and, upon the machine being fed forward faster than `the boring is accomplished, the drill-spindle K will assume the position shown in Fig. 3. In that position of said spindle the sleeve n has been drawn away from the pinion t, and said pinion continues to revolve without affecting the sleeve and screw R. `Consequently the machine remains stationary until the progress of the boring has again allowed the spindle K to move forward, and has again caused the sleeve u to connect with the pinion t for the purpose of automatically feeding the machine forward, as before.

By meansof the hereinbefore-described connection of the support Q with the split sleeve A', made adjustable both along and around the column B', the machine can be set and held in place vertically, horizontally', or at any desired angle and in any direction from the axial line of the column as a center.

It will alsobe noted that with the addition of the two bevel-wheels E F and shaft M, ar-

ranged in a line which is parallel with `the swivel-bolt d', the liy or operating wheel remains always in a vertical and convenient po sition for working in the various changed positions of the machine.

\ it will also be noticed that by means of the step-bearings e and n for the shafts D and M, friction is reduced by causing said bearings to receive 'the thrust of said shafts.

Having thus fully described my invention, I

Vclaimas new and desire to secure by Letters lever and simultaneously force the spindle down and the sleeve up, as and for the purpose specified.

2. The combination of the rotating and sliding drill-spindle K, the longitudinally-sliding hammers G and their springs J, the rotating shaft D, by which the longitudinally-sliding hammers are made to rotate around the axis of said shaft, the gears l m b', and loose pinion t, the screw It, by which the sliding box or frame portion A of the machine is fed forward, and'on which the loose pinion tis arranged, the longitudinally-.sliding sleeve or clutch n, fitted to rotate in common with said screw and engaging with the pinion t, the 1ever c, and the spring af, essentially as and for the purposes described. i

3. The screw R, having end sleeve, u, the lever n, and the spindle K, having a slight longitudinal play in its bearing, in combination with a pinion, t, wheel bf, and pinion Zon shaft D, whereby thev machine will be moved for- A ward until the drill comes in contact with the rock, as described. p

" EUGENE MOREAU.

Witnesses A. GREGORY, C. SEDGWIGK. 

